Working as an undercover cop in a world where almost everyone is addicted to Substance D -- a drug that produces split personalities in its users -- Fred Arctor (Keanu Reeves) sets up an elaborate sting to nab a notorious drug runner named Bob. Little does Fred know that "Bob" is his alter ego. Based on the novel by Philip K. Dick, this sci-fi thriller from director Richard Linklater owes its distinct look to rotoscope animation